Pictures open behind dopus

something has changed over the last couple days in that if I click on any picture folder in dopus and open the .jpg via dblclick, it shows behind the main dopus window

have not changed any type of keep on top setting, so how do I get my pictures to stay in focus? now, I have to minimize or close dopus to be able to scroll through the images (spacebar)

Check the pin button in the top-right of the Lister, it is probably set to either the middle or on position.